D. UPADHYAY, G. K. GAUR, P. K. BHARTI, M. SINGH, and T. DUTT, “Investigating reasons for lower birth weight in crossbred calves”, Indian J of Anim Sci, vol. 87, no. 9, pp. 1145–1148, Sep. 2017, doi: 10.56093/ijans.v87i9.74336.